Question about Canon PC-795 Copier

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Dark image on bottom of page

When copying anything, a black splotchy line is present on the bottom of the page that comes out of the copier. What needs to be done?

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Without seeing it I would guess it's a dirty, uneven band of black....?
Probably the cleaning blade in the drum unit has failed (or got some paper fibre under it , it works like a windscreen wiper blade, you get a bug under that blade you get streaks) Problem is, it is usually part of the drum module, so replacement is your only option IF that is the cause .You might be able to dismantle the unit and clean the blade, but that depends on your expertise, and it may still be worn, cleaning would not help.

Posted on Jun 13, 2008

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Copier leaves a black line when printing through the top paper feeder. Ok coping from the flatbed


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Konika Minolta Copier prints half dark pages


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Fault code J50 & dark strip.


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J50 was caused by exit sensor not sitting correctly in its bracket,I fixed this by pushing it until it
clicked back in.
The dark lines & double imaging can be caused light getting onto the drum ,or if the drum gets
cold (so I have been advised) which one it was for sure I will never know because when I
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May 18, 2009 | Printers & Copiers

1 Answer

Black line down the middle of scanned documents.


Try leaving the cover open and run a test scan, once with a fresh sheet as the item to be scanned and then a second time without anything on the table.  You may see what is blocking the light source or possibly a defect in it.
Scanning is done left-right, left-right across the width of the page and the vertical stripe indicates that the blockage is present during each scanned line.
In servicing copiers and multifunction machines, I have found a number of curious contaminents, one of the most annoying was a moth, still alive, that would randomly sit on the lamp, causing some pages to come out OK, others not. 
If your copies and printouts are coming out fine, then only the scanner can be at fault.

Jan 13, 2009 | HP Photosmart 2575 All-In-One InkJet...

1 Answer

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check the toner and cartiga

Sep 05, 2008 | Sharp Printers & Copiers

1 Answer

PC940 dark lines across the middle of the page


Either the Fuser/Heating unit is bad, or the optics are dirty.
What you can try to do to narrow it down, is to make a copy but.. STOP the machine in mid process by turning the power off. This will create a paper jam in the machine. If timed properly, your copy should be 1/2 way through the machine with some image on it. (Make sure that you are trying to copy something on the glass). The copy is not FUSED, so the toner will wipe off so be careful not to rub the page against your clothes/sleeve. IF the black line is on the page at this point, the problem is not in the fuser but probably in the fiber optics. If the problem is in the optics and will need to be cleaned. If the black line is NOT on the page at this point, then the fuser unit is bad and needs to be replaced.
Let me know how the copy comes out when you stop the machine in midway and I can see if i can give you any more suggestions.
Good luck.
Mac

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1 Answer

Installed new drum


dark lines is probably caused by the thin glass of the copier. test by making copy on glass, does it have lines? if no look carefully at the small 1" glass there is probably some ink dots or white out or something on it, clean with alcohol and try.

fish scales uniformly are coming from the fuser, ( where it gets hot as its coming out) check.You already changed drum which was a posssibility.

Also check the toner and see if it is solid black.

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